kronosnet: Fix build with gcc-12

Fix the build failure when debug build is enabled.
Add DEBUG_BUILD = "1" in conf/local.conf.
 $ bitbake kronosnet
  | /build/tmp-glibc/work/corei7-64-wrs-linux/kronosnet/1.22-r0/recipe-sysroot/usr/include/bits/string_fortified.h:59:10: error: 'link' may be used uninitialized [-Werror=maybe-uninitialized]
  |    59 |   return __builtin___memset_chk (__dest, __ch, __len,
  |       |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  |    60 |                                  __glibc_objsize0 (__dest));
  |       |                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~
  | ../../git/libknet/links.c: In function 'knet_link_set_config':
  | ../../git/libknet/links.c:108:27: note: 'link' was declared here
  |   108 |         struct knet_link *link;
  |       |                           ^~~~
  | cc1: all warnings being treated as errors

Signed-off-by: Mingli Yu <mingli.yu@windriver.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

2 files changed, 41 insertions, 0 deletions

diff --git a/meta-networking/recipes-extended/kronosnet/kronosnet/0001-links.c-Fix-build-with-gcc-12.patch b/meta-networking/recipes-extended/kronosnet/kronosnet/0001-links.c-Fix-build-with-gcc-12.patch
new file mode 100644
index 0000000000..e59501cc49
--- /dev/null
+++ b/meta-networking/recipes-extended/kronosnet/kronosnet/0001-links.c-Fix-build-with-gcc-12.patch
@@ -0,0 +1,40 @@
+From a8aac8f3fd8b07fde8f5dc0aa9ece54a46d24425 Mon Sep 17 00:00:00 2001
+From: Mingli Yu <mingli.yu@windriver.com>
+Date: Thu, 9 Jun 2022 16:03:06 +0800
+Subject: [PATCH] links.c: Fix build with gcc-12
+
+Fixes:
+  | /build/tmp-glibc/work/corei7-64-wrs-linux/kronosnet/1.22-r0/recipe-sysroot/usr/include/bits/string_fortified.h:59:10: error: 'link' may be used uninitialized [-Werror=maybe-uninitialized]
+  |    59 |   return __builtin___memset_chk (__dest, __ch, __len,
+  |       |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+  |    60 |                                  __glibc_objsize0 (__dest));
+  |       |                                  ~~~~~~~~~~~~~~~~~~~~~~~~~~
+  | ../../git/libknet/links.c: In function 'knet_link_set_config':
+  | ../../git/libknet/links.c:108:27: note: 'link' was declared here
+  |   108 |         struct knet_link *link;
+  |       |                           ^~~~
+  | cc1: all warnings being treated as errors
+
+Upstream-Status: Submitted[https://github.com/kronosnet/kronosnet/pull/382]
+
+Signed-off-by: Mingli Yu <mingli.yu@windriver.com>
+---
+ libknet/links.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/libknet/links.c b/libknet/links.c
+index 8cb1621b..0ef42b79 100644
+--- a/libknet/links.c
++++ b/libknet/links.c
+@@ -105,7 +105,7 @@ int knet_link_set_config(knet_handle_t knet_h, knet_node_id_t host_id, uint8_t l
+ {
+        int savederrno = 0, err = 0, i, wipelink = 0, link_idx;
+        struct knet_host *host, *tmp_host;
+-       struct knet_link *link;
++       struct knet_link *link = NULL;
+ 
+        if (!_is_valid_handle(knet_h)) {
+                return -1;
+-- 
+2.25.1
+
diff --git a/meta-networking/recipes-extended/kronosnet/kronosnet_1.22.bb b/meta-networking/recipes-extended/kronosnet/kronosnet_1.22.bb
index ad0a00e78a..0b0bc29452 100644
--- a/meta-networking/recipes-extended/kronosnet/kronosnet_1.22.bb
+++ b/meta-networking/recipes-extended/kronosnet/kronosnet_1.22.bb
@@ -14,6 +14,7 @@ DEPENDS = "doxygen-native libqb-native libxml2-native bzip2 libqb libxml2 libnl
 SRCREV = "0123ecebce0ad6aba3cdb320027192e15fd71e23"
 SRC_URI = "git://github.com/kronosnet/kronosnet;protocol=https;branch=stable1 \
            file://0001-libknet-tests-Correct-include-path-for-poll.h.patch \
+           file://0001-links.c-Fix-build-with-gcc-12.patch \
            "
 
 UPSTREAM_CHECK_URI = "https://github.com/kronosnet/kronosnet/releases"